Mechanical stoking grate support



' May 8, 1923. v

v. lMacKAY MECHANICAL STOKING GRATE SUPPORT Filed Nov. '7, 1919 I5 Sheets-Sheet 1 @brow cq 'May s, 192'3. 1,454,324:

V. MaCKAY MECHANICAL STOKING GRATE SUPPORT File@ Nov. 7,' 1919 A :s sheets-sheet 2 Vasi? Mfg? ay. l

i May 8, 1923.

1,454,324 v. MacKAv MECHANICAL STOKING'GRATE SUPPORT l Filed Nov, v, 1919 3 sheets-sheet 5 MQW at,

CII

vAsIn MACKAY, or'wasrtrnercn, nrs'rnror or lconn-Misra MECHANICAL 'STOKING @RATE SUPPRT,

Application led November 19152. Serial No. 236,442.

To all whom i may concern.'

Be it known that I, VAsiL MAGKAY, a citizen of the United States, residing at lWashington, in the District of Columbia, have invented certain new aud vuseful Imgrovements in a MechanicalStoking Grate upport, of which they following is a specification. y

My present invention relates to new and useful improvements in a furnacefstructure and more particularly to the support `for the grate thereof.

The principal object of the invention, is the construction of the grat-e support in such a manner that the dead plate, now com' monly used in furnaces of the character illustrated may be eliminated.

Another object consists in constructing the grate support so that the saine will be held in an inclined position, within the furnace, so that the fuel may be fed from the forward end tothe rear end by means of sets of grate bars which are alternately operated in a manner tobe later described.

A further object consists in the provision of a lip or projection,y on the front of the furnace structure, adjacent the lower edgeof the fuel opening, adapted to cooperate with the foremost grate bar to preventfuel from sifting or dropping between the front of the furnace and' grate bar.

With the above and other objects in view which will appear as thedescription prou ceeds my invention consists'in the novel details of construction and arrangement ofl parts described and illustrated, and` while I have illustrated and described the preferred embodiment of the invention it will be understood that such changes may be made in the construction and operationas fall within the scope of the appended claims.

In the accompanyingy drawings Figure 1 isla fragmental vertical section through the furnace structure showing the grate and supporting mechanism therefor in side elevation.

Figure 2 is a fraginental horizontal section through the furnace with the grate and supporting mechanism therefor shown in top plan.

Figure 3 isa fragmental enlarged vertical section through the frontplate of the furnace structure and grate bars.

Figure 4: is a fragmental perspective of the front plate, of the furnace structure,

showing one end of the side beam in'position.

Figure 5 is a detailed fragmental perspec tive of one end of the side supporting beam; Figure 6 is a fragmental perspective of the furnace structure with the ing mechanism in position. f

In the drawing A illustrates lthe masonry' of the furnace structure having an opening in the front wall thereof adapted .tobe cov` ered by means of the metal front plate B having the fuel opening C therein.- rl`he fire chamber is indicated at D and the metalv front plate B is provided adjacent the bottom', with the transversely spaced openings E for-removing ashes or gaining access to the ash pit for other purposes vThe bridge wall is indicated at F and is of usual well known construction. It will be understood that the fuel opening C and the ash pit openings E will be covered by, doors yor if desired stokersfof any well known construction may be .secured over the fuel opening C.y f

TheJ support for the'gratebarsconsists of the longitudinally extending beamslO which are transversely spaced within the furnace. structure to receive 'the trunnions formed on the ends4 of the grate bars. Anynumber of rows of grate bars may be used but in the drawings I have illustrated` fourside bars which will support two rowsof grate bars and the opening C in the front plate Bf will be of sufficient length to allow the introduction .of fuel on to both rowsvof the grate bars. As shown, more particularly in ,Figures 2 and6, the intermediateside beams 10 grate supportingy 160i", grate supportso@ t will be arranged vside by' side. j Each sid'ev-z beam lOis formed with the leg 1l on one in the upper surface of a transversely e2;`V-

The horizontal extensionsv 12 arei' adapted to be received in pockets v13 formed l 10o;

tending girder 14 set in the front face of thebridge wall Fat the lower end. Prefery ably' the bridge walloverliesthe top of the horizontal extensionsv l2 as more partieu-v larly illustrated in Figure 6, and the legsll are secured to the front plate B by means of bolts l5 or other suitable fastening means.`

lThe beams are secured in any such position within the furnacestructure, that the tops of the forward ends will lie .flush with the lower edge of the fuel opening C and will be inclined to support the grate bars in inclined position so that the fuel may be fed from the forward edge of the grate towards the rear thereof.

A projection or lip 16 is formed on the inner face of the metal front plate B, adjacent the lower edge of the fuel opening C and when two rows of grate bars are used this lip or projection will be cut away at the center, as more particularly illustrated in Figure Ll, to receive the forward ends of the intermediate supporting beams. rllhe grate bars are indicated at 17, and are 'provided on their ends with trunnions adapted to be re ceived in the sockets formed in the upper edges of the beams 10. The foremost grate bar 17 is adapted to rest in close proximity to the lip or pr jection 16 and will cooperate therewith to prevent fuel from sifting between the front plate B and the grate bars. As shown, more particularly in Figure 3 of the drawings, the forward edge of the grate bar is arcuate in shape so as to remain in close proximity to the lip or projection 16 during the swinging n'iovenicnt the grate bar; f

i @per-ating levers 18 are pivotally connected to the front of the plate ll, adjacent the lower edge thereof, and are connected by meansof links to the bars 19 which secured to the depending arms 20 foi-ined on the grate barsl?. Alternate grate bars u connected together so as to provide two sets of grate bars which may be operated alternately to feed the fuel from the forward end of the grate towards the rear.

From the above detailed description it will be noted that l have provided suppoi means for the grate barswhich will eli` natetheuse of the dead plate now commonly used in furnace structures of the character illustrated'. At the same time it will be seen that kthe side supporting beainslO are formed with the perpendicular leg on one end and the horizontal extension on the opposite end so that when secured in the furnace they will be inclined from the forward towards.` the rear. This will support the grate bars` in such position that fuel may he fedl from. the forward end of the grate towards the rear. rlhe lip or projection 16, formed On the inner face of the front plate B cooperates with. the foremost grate bar so to prevent fuel from sifting .between the front plate and foremost grate bar. rllhe construction of my grate support is quite simple but at the same time supports the grate bars in a manner as to properly feed 'the fuel and l eliminate the deady plate.

Having fully described my invention what l claim as new and desire to secure by Letters Patent is:

1. ln combination with a furnace having a fuel opening in the front wall thereof and a bridge wall formed with sockets, an in* wardly extending lip formed at the lower edge of the fuel opening, a grate supported in the furnace with its forward end adjacent the fuel opening, said grate comprising ini clined side beams each having a horizontal extension on the lower end received in one of the sockets formed in thebridge wall and a depending' perpendicular leg formed on the opposite end and engaging the front wall of the furnace beneath the fuel opening, securing means passing through the legs and front wall of the furnace, swinging grate bars carried' by the side beams, the forwzfiid most grate bar being in close proximity to the inwardly extending lip, and means for operating the grate.

2. lncombination withv a furnace having a fuel opening in the front wall thereof, a bridge wall having a cutout portion forni ing an over-hanging shoulder', a girder received in said cut out portion of the brA wall and provided with recesses in the upper edge, a grate supported in the fu nace with its forward end adjacent the fuel opening, said grate comprising inclined side beamsy each having a. horizontal extension on the lower end receivedy in one of the recesses in the upper edge of the girder and beneath thev over-hanging shoulder of the bridge wall. and a depending perpendicular leg on the upper end adapted to engagel the front w ll of the furnace beneaththe front openiy securing means passing through the legs an front wall ofthe furnace, swinging grate bars carried by the side beams, and means for operating the grate bars.

3. ln combination with a furnace having` a fuel opening in the. front wall thereof and a bridge wall formed with sockets, an inwardly extending lip formed at the lower edge of the fuel opening, downwardly inclined side beams having their upper ends in contact with the ends of the inwardly entending lip and secured to the front wall and their lower ends supported' in the sockets of the bridgewall, grate barsA pivotally supported by the side beams, the uppermost grate bar lying in close proximity to the inwardly extending lip,and means for op erating the grate bars.

ln testimony whereof l hereunto afiix my signatur VASlL MACKAY.

lil() llo) 

